Service difficulty report · Actuator Valve · Bombdr DHC8402

Difficulty date
June 28, 2014
Submitted
July 2, 2014
Operation
Air carrier
Aircraft
N416QX
Make and model
Bombdr DHC8402
Aircraft serial
4083
Aircraft time
26,481 hours, 27,159 cycles
Engine
Pwc PW150A
Part
Actuator Valve
Part number
7288091
Part serial
898
Condition
Failed
Location
Fuel System
Part time
4,720 hours, 4,989 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING CLIMBOUT 14000 FT TO FL 220, NR 1 AND 2 FUEL TEMP ON ED TURNED RED, RAN EAC. TURNED AUX PUMPS ON BRINGS TEMP DOWN BUT WENT RIGHT BACK UP WHEN AUX PUMPS TURNED OFF BOTH FUEL TEMPS RED ON GROUND WITH AUX PUMPS RUNNING BOTH TEMPS DID NOT EXCEED 74 DEGREES C, HAD BOTH AUX PUMPS RUNNING FOR DURATION OF DESCENT APPROXIMATELY AND LANDING. RETURNED TO FIELD, LANDING UNEVENTFUL. R & R FUEL HEATER THERMO ACTUATOR VALVE ON NR 1 AND NR 2 ENGINES IAW MM TASK 73-11-05-000-801 AND 73-11-05-400-801 ALSO COMPLIED WITH MCN 67365-01 AND HS 73-0039 AND RIL 84-73-001. OPS AND LEAK CHECKS GOOD. RETURNED TO SERVICE.